Bid the grand

[Lord Molyb]

[hv=pc=n&s=sa653hkqt82dca832&n=skqt742ha6dt93ck6&d=n&v=0&b=1&a=1sp]266|200[/hv]

West bids 3♦ if possible. He'll also double an artificial diamond bid. East raises to 4♦ (or 5♦) if possible whenever west bids 3♦ or doubles a diamond bid.

[Zelandakh]

Seems to be easy enough if using a maxi-splinter convention. It gets more difficult if East raises to 5♦ voluntarily (as they possibly should).

 

1♠ - 2NT (mini or maxi splinter);

(3♦) - P - (4♦) - X (maxi + short ♦);

 

followed by RKCB.

 

Even better if 3♥ is always a maxi-splinter rather than a two-way call (as I used to play it). Then you can show the void below 4♠ having cut out the interference.

[Cyberyeti]

1♠-3♥(single suited rock crusher or HHxxx♥, Hxxx♠ and values for a GF H=AKQ)

3♠-4♣(cue agreeing spades guaranteeing the second type)

4♥(high card cue in partner's suit)-6♦ void confirming club cue is the A

7♠

[Cascade]

We play void splinters they make it easy. One possible route is:

 

1♠ Pass 4♦ Dbl

4NT 5♦ 5♥ Pass

5NT Pass 6♥ Pass

7♠ All Pass

[Zelandakh]

Is the South hand really within your splinter range Wayne? That is great here but might be difficult on hands where North has a closer call on whether to move forward or not.

[Mbodell]

[hv=pc=n&s=sa653hkqt82dca832&n=skqt742ha6dt93ck6&d=n&v=0&b=1&a=1sp]266|200[/hv]

West bids 3♦ if possible. He'll also double an artificial diamond bid. East raises to 4♦ (or 5♦) if possible whenever west bids 3♦ or doubles a diamond bid.

 

1♠-2♥ : natural; natural FG

(3♦)-3♠-(4♦)-5♦ : natural showing extra spade length; diamond exclusion

6♣-6♦ : 2 + Q outside diamonds : we have all the keys, you have anything else for 7?

7♠ : yep

 

I'm not sure if S should bid 7 after 6♣ or ask for something else, but if N knows that we have all the key cards and the void in diamonds that Ax of hearts and Kx of clubs must be golden if S asks again.